In-depth analysis of the differences between podman and docker

This article brings you relevant knowledge about podman and docker. It mainly introduces to you what podman and docker are, and what are the differences between them. Interested friends should take a look. Well, I hope it helps everyone.

Podman is a container management tool that can be used to run and manage containers. It is an open source project developed by Red Hat and aims to provide the same functionality as Docker, but without Docker's daemon process. This means that Podman can run containers directly without starting a daemon, and it does not rely on Docker's repository or image format.

Compared with Docker, Podman has some significant differences:

• Podman runs the container directly and does not require a daemon process. This means that Podman can run containers directly without starting a daemon, and it does not rely on Docker's repository or image format.

• Podman can use standard Linux container tools (such as systemd) to manage containers. This means that Podman can integrate with other tools (such as systemd) and provide similar functionality to Docker.

• Podman uses the standard Linux user and group permissions model. This means that Podman can use users and groups on the Linux system to control access to the container, rather than using Docker's own permission model.

• Podman can run in rootless mode. This means that Podman can run containers without root privileges, which is very convenient for users who want to use containers in production environments but do not want to use root.

There are some significant differences in the use of Podman and Docker.

• Command line interface: Podman and Docker use different command line interfaces. For example, Podman uses the podman command instead of the docker command, and its subcommands are also different.

• Image repository: Podman and Docker use different image repositories. Podman uses the standard Linux file system to store images, while Docker uses its own repository. This means that Podman can access the local image directly, while Docker needs to access the image through the Docker repository.

• Image format: Podman and Docker use different image formats. Podman uses the OCI (Open Container Initiative) image format, while Docker uses its own image format. This means that Podman can use OCI images directly, while Docker needs to convert the OCI image to a Docker image before it can be used.

• Process management: Podman and Docker use different process management methods. Podman uses standard Linux process management tools (such as systemd) to manage container processes, while Docker uses its own process management method. This means that Podman can integrate with other process management tools (such as systemd), but Docker cannot.

In general, Podman and Docker are basically the same in functionality, but they have some differences in implementation.

Recommended learning: docker video tutorial

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